The NFL is experiencing an offensive revolution with records set for the most touchdowns and points scored through the five-week mark.

Somebody tell the Broncos.

During their current three-game losing streak, the Broncos’ offense has appeared out of sorts, which is puzzling considering the offseason additions and preseason expectations. They struggle to score in the red zone. They struggle on third down. They turn it over far too often.

“We’re overdue to play our best game,” offensive coordinator Bill Musgrave said. “We’re overdue to put four quarters together — well overdue. It’s time for us to really roll.”

Get on a roll or get rolled over.

The reeling Broncos (2-3) host the high-flying Los Angeles Rams (5-0) on Sunday and will try and catch up to the rest of the league’s best offenses. So far, they are below average.

Eight teams are averaging at least 27 points per game, part of a league record 424 touchdowns and 3,739 points through five weeks; the Broncos are at 20.0 per game, (26th).

Twenty-two quarterbacks have a rating of at least 90; the Broncos’ Case Keenum is at 78.1 (29th).

Six quarterbacks are completing more than 70 percent of their passes; Keenum is at 63.5 (21st).

Seventeen teams are converting at least 40 percent of their third down chances; the Broncos are at 35.8 (26th).

And 12 teams are scoring touchdowns on at least 60 percent of their red zone trips; the Broncos are 46.7 (27th).

Games are high-scoring (teams have reached 30 points a combined 40 times) and exciting (45 games have been decided by one possession, tied with 1999 for most in league history through five weeks.). Broncos fans can only wish their offense was as productive and fun to watch as the one they saw in Week 4 (Kansas City) and will see Sunday (Rams).

Why has offense league-wide taken another jump? And how do the Broncos catch up?

Rules favoring the offense

In 2010, no team averaged 400 yards per game and only one (New England) averaged at least 28 points.

Defensive players on the Broncos point to the rules limiting contact with skill position players and a crackdown on hitting the quarterback for the explosion of points.

“Without a doubt,” safety Darian Stewart said. “You can’t touch the quarterback or receivers too much because you’ll get a flag. They’re definitely making it easier on the offense and harder on the defense.”

Said nose tackle Domata Peko: “It’s tougher to play defense, but that’s the challenge. That makes you want to play defense.”

Rules do favor the offense, but there are at least two other factors helping the offense.

Every part of the offensive depth chart — quarterback, skill position, offensive line — has a well-versed knowledge of the passing game, dating back to high school. The spread offense’s fingerprints are nationwide, from the high schools to the colleges and now to the pros. The transition to the NFL is still real, but more manageable, for those on the offensive side.

And the NFL’s best coaches look at all levels of football for ways to spice up their playbook. Coaches lift good plays from anywhere.

“You study these teams and what they’re implementing from the college game,” Broncos cornerback Chris Harris said. “Studying for me is totally different than it was studying four years ago. Every game, you have to be ready (for everything).”

Harris said the “RPO” — a called run play with a pass option — has further stressed defenses. A standard play in college for years, it’s now spread to the NFL. The quarterback puts the ball in the belly of the running back but keeps his hands on it if he wants to pull it out and throw a quick pass. The RPO helps negate the pass rush and takes advantage of soft coverage and stay-at-home defensive ends. Those quick throws have helped produce a boon in completion percentages.

“Those are tough on defenses,” Peko said. “You play the run and the linebackers bite? Then they throw it to the tight ends.”

Said defensive lineman Zach Kerr: “It’s more so the blocking schemes (that have changed), too. The running back takes the same track, but teams have gotten creative. We see new stuff every Sunday from what we’ve watched on tape.”

Another wrinkle is the amount of pre-snap movement. A West Coast offense staple is pre-snap shifts, but coaches like Kansas City’s Andy Reid and the Rams’ Sean McVay are taking motions and shifts to a new level.

Simple has been successful for many teams this year. The Broncos’ offense is playing catch-up.

How can Broncos adjust?

Things started well for the Broncos offense this season. They gained 470 yards and had 10 explosive plays (rush of at least 12 yards/pass of at least 16) in the Week 1 win over Seattle. In Week 2, they woke up at halftime and scored on their final four possessions to beat Oakland 20-19.

The longer the offensive drought continues, the more it appears the Broncos’ personnel may not be conducive to them being elite. Right tackle Jared Veldheer (knee) is out. Left tackle Garett Bolles is struggling. And right guard is open for business between Connor McGovern and Max Garcia. Tight end Jake Butt tore his ACL in practice before the Kansas City game. Receiver Demaryius Thomas has a whopping six dropped passes. And Keenum needs to play better.

There are things the Broncos could explore. Here are three:

Dictating the tempo. If they achieve an initial first down, go no-huddle to keep the opponent in their same personnel grouping, allowing Musgrave to explore mismatches.

Play rookie running back Phillip Lindsay on third down. He does his best work in space so school him up on pass protection to give him more snaps, which would then allow them to give Royce Freeman more early-down work.

Use an extra body (or two) in pass protection. Be it tight ends Jeff Heuerman or Matt LaCosse (or both), the Broncos should explore using six- and seven-man protections to help their offensive tackles and allow Keenum to take shots downfield.

“Definitely (need) a much better performance than recently,” Musgrave summarized last week.

The NFL wants offense. So do the Broncos.

“That’s what this league is about,” said Peko, in his 13th season. “Everybody wants to see touchdowns. That’s what drives this league.”

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